CVE-2026-50248

ADVISORY - debian

Summary

In NLnet Labs Unbound 1.7.0 up to and including 1.25.1, when an auth/rpz zone has a configured primary hostname that resolves to BOGUS A/AAAA, it is still considered as a possible XFR endpoint. A malicious actor that can spoof the hostname's A/AAAA record (no valid RRSIG required) becomes the zone's XFR primary and can replaces the entire zone/the resolver's entire response policy.

unbound 1.25.2-1 https://community.nlnetlabs.nl/t/unbound-1-25-2-released/3430

Common Weakness Enumeration (CWE)

Impacted images

Advisories

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